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Finding the Fourth Proportional to 13,708.52, 20,549.07 and 6,318.32

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Solution

The fourth proportional to 13,708.52, 20,549.07 and 6,318.32 is: 9,471.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,708.52 : 20,549.07 = 6,318.32 : x
  2. Step 2: Convert to fraction form
    13,708.52/20,549.07 = 6,318.32/x
  3. Step 3: Cross multiply
    13,708.52x = 20,549.07 × 6,318.32
  4. Step 4: Simplify right side
    13,708.52x = 129,835,599.96
  5. Step 5: Solve for x
    x = 129,835,599.96/13,708.52
  6. Step 6: Final answer
    x = 9,471.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.